Modelling and test of aeration tank settling (ATS)

M. K. Nielsen, H. Bechmann, Mogens Henze

    Research output: Contribution to journalJournal articleResearchpeer-review


    The use of aeration tank settling during high hydraulic loads on large wastewater treatment plants has previously been demonstrated as a reliable technique and proven valuable. The paper proposes a simplified deterministic model to predict the efficiency of the method. It is shown that a qualitatively correct model can be established. The simplicity of the model allows for on-line identification of the necessary parameters, so that no maintenance is needed to use of the on-line model for control. The practical implementation on three plants indicates that implementation of STAR with ATS control gives 50% increase of plant capacity for 3% extra cost.
    Original languageEnglish
    JournalWater Science and Technology
    Issue number9
    Pages (from-to)179-184
    Publication statusPublished - 2000


    • stormwater control
    • hydraulic capacity
    • activated sludge
    • modelling
    • Wastewater treatment
    • on-line control


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